| Apiaceae | |
Leptotaenia anomala
| J.M. Coult. & Rose | Rev. N. Amer. Umbell. 53, pl. 2, f. 39 | 1888 |
| Apiaceae | |
Leptotaenia bradshawii
| Rose ex Mathias | Leafl. W. Bot. 1(10): 101–102 | 1934 |
| Apiaceae | |
Leptotaenia californica
| Nutt. | Fl. N. Amer. 1(4): 630 | 1840 |
| Apiaceae | |
Leptotaenia dissecta
| Nutt. | Fl. N. Amer. 1(4): 630 | 1840 |
| Apiaceae | |
Leptotaenia eatonii
| J.M. Coult. & Rose | Rev. N. Amer. Umbell. 52, pl. 2, f. 36 | 1888 |
| Apiaceae | |
Leptotaenia filicina
| M.E. Jones | Contr. W. Bot. 10: 56 | 1902 |
| Apiaceae | |
Leptotaenia foliosa
| (Hook.) J.M. Coult. & Rose | Contr. U.S. Natl. Herb. 7(1): 198 | 1900 |
| Apiaceae | |
Leptotaenia hendersonii
| (J.M. Coult. & Rose) Mathias & Constance | Bull. Torrey Bot. Club 68(2): 123 | 1941 |
| Apiaceae | |
Leptotaenia humilis
| J.M. Coult. & Rose | Contr. U.S. Natl. Herb. 7(1): 200 | 1900 |
| Apiaceae | |
Leptotaenia leibergii
| J.M. Coult. & Rose | Contr. U.S. Natl. Herb. 7(1): 202, pl. 7 | 1900 |
| Apiaceae | |
Leptotaenia minor
| Rose ex Howell | Fl. N.W. Amer. 2: 251 | 1898 |
| Apiaceae | |
Leptotaenia multifida
| Nutt. | Fl. N. Amer. 1(4): 630 | 1840 |
| Apiaceae | |
Leptotaenia purpurea
| (S. Watson) J.M. Coult. & Rose | Rev. N. Amer. Umbell. 52 | 1888 |
| Apiaceae | |
Leptotaenia salmoniflora
| (J.M. Coult. & Rose) J.M. Coult. & Rose | Contr. U.S. Natl. Herb. 7(1): 201 | 1900 |
| Apiaceae | |
Leptotaenia turgida
| J.M. Coult. & Rose | Fl. N.W. Amer. 1: 251 | 1898 |
| Apiaceae | |
Leptotaenia watsonii
| J.M. Coult. & Rose | Rev. N. Amer. Umbell. 52 | 1888 |